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Best Time for Glacier Country: Going-to-the-Sun
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Preferred months for this journey: July, August, September. Check the seasonal notes before choosing your dates.
💡 Good to know
- The full Going-to-the-Sun Road is normally open to through traffic in this window, but weather, rockfall, construction and congestion can still close or restrict it. Check the dated National Park Service road status before setting out.
- This product depends on the full alpine Going-to-the-Sun Road through Logan Pass. The complete road normally closes outside the short summer season, so Odycairn does not generate this through-route in these months.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | −12.0°C | −4.2°C | 74 mm | 8.5 h | ❄ |
| February | −12.4°C | −3.6°C | 61 mm | 9.9 h | ❄ |
| March | −7.5°C | 1.0°C | 72 mm | 11.6 h | ❄ |
| April | −3.1°C | 6.8°C | 66 mm | 13.4 h | ❄ |
| May | 2.2°C | 13.7°C | 77 mm | 15.0 h | ❄ |
| June | 6.3°C | 17.9°C | 96 mm | 15.9 h | |
| July | 10.7°C | 24.2°C | 30 mm | 15.5 h | |
| August | 9.7°C | 24.1°C | 34 mm | 14.1 h | |
| September | 4.8°C | 18.0°C | 47 mm | 12.3 h | |
| October | −1.4°C | 8.6°C | 63 mm | 10.5 h | ❄ |
| November | −6.7°C | 0.6°C | 77 mm | 8.9 h | ❄ |
| December | −12.3°C | −4.7°C | 74 mm | 8.1 h | ❄ |